Gold-saving device.



J" B, GEBR".

GOLD SAVI :uLIUAT-ION DEVICE.

Patented De@ Q. y

Illu! Tg?? l MNE. Cw

ATTORNEY J, B. GREENlA GOLD SAVING U MPmu.

EVICE.

10N FILED 2:0

Patented Dec. 29, MHA

2 SHEETS SHEET p asgold bearing sand or UNITED STATES PATENT OFFICE.

JOSEPH B. GREEN, OF SEATTLE, WASHINGTON, ASSIGNOR T MONARCH FNGLINEERING'V COMPANY, 0F SEATTLE, WASHINGTON, A CORPORATION.

GOLD-SAVING- DEVICE.

Application led November 22, 1913. Serial No. 802,446.

To all whom it may concern:

Be, it known that l, Josemi B. GREEN, citizen of the United States, residing at Seattle, in the county of King and State of lllashington, have invented a certain new and .useful improvement in Gold-Saving Devices, of which the following is a speciication.

My invention relates to improvements in vanning devices that are adapted Jfor separating precious metals from their ores and the object of my improvement is to provide a device of this class that shall be especially adapted for separating line or ioat gold from gold bearing sand orgravel. .I accomplish this object by devices illustrated in the accompanying drawings in which-- Figure l is a view in longitudinal section of a structure embodying my invention; Fig. 2, is a plan view of the same showing certain parts broken away better to illustrate certain other parts; Fig. 3, is a view in cross-section on broken line a', w of Fig. 2; Fig. 4, is a fragmentary view in perspective illustrating a detail of my invention and Fig. 5, is a fragmentary view of a detail of my invention.

Referring to which like reference numerals indicate like parts, 6 is a side-shaking vanner frame which is carried on supporting bars 7 that rest on a supporting frame S, a shaft 9, provided with osetoreccentric portions 10, 11 and 12 and with Ya belt pulley 13 is suitably journaled on one side of the frame connected with asource of power (not shown) ,by a belt 14. Thereacentric portions 10, 11 and 12 of the shaft 9 are each connected with the bottom side of the vanner frame 6 by connecting links 15, 15 as clearly illustrated in Fig. 3 and are adapted to impart a side-shaking motion to such vanner frame 6.

16 is a distributingI box into which ore, gravel may be fed by a conveyer 17. The distributing box 16 is provided with the usual spaced blocks 18 and empties onto a screen 19 which has its lower edge secured to the top edge yof a sluice box 20 and which serves to' separate the coarse ore from the tine ore, the coarse ore passing over the screen 19 and being deposited in the sluice box 20 and the ner -ore passing through the screen 19 andialling on anotherscreen 21 that 1s placed on Specification of Letters Yatent.

the drawings, throughout' Patented Dec. 29,1914.

the top of an amalgamated copper plate 2 upon which it moves slowly toward the discharge end of the machine and thence', drops a slight distance and passes between two other amalgamated copper plates 23 and 24, which plates 23 and 24 may also be pro tected by having rillie bars or screens similar to the screen 21 placed upon their amalgamated surfaces. After passing for a considerable distance between the plates 23 and 24 the liner ore falls into a trap 25v whiclis filled with a solution of sodium amalgam. The plate 23 extends within the trap 25 and covers the sides and bottom thereof andthe plate 24 extends within such trap 25 to within a few inches of the bottom, thus the that may have escaped the plates 23 and 24.

y ore entering the tra p 25 from betweenf the A plurality orecesses 26, 26, arey pro 1 vided in the bottom ofthe trap 25 in which the rare metals may settle and a rotary 'agi- I .tator 27 mounted on ashaft -28 that is pro- Y--videdwith a belt pulley 29by means of whi'clit may be driven, is also provided to extend lengthwise within the trap'V 25..,and

is adapted to be rotated in-the direction indicatedby the arrow to cause the pulp'to pile upon the lower side of the trap 25 and to pass over the lower edge of such trap. The pulp thence moves toward the discharge end of the machine over a blanket 31l of cocoanut'y matting, lburlap orpthelilre,

which is spread upon and covers a copper plate 30 and which has transverse riles 32,

32 that are secured together oy bars 33, 33 placed on its upper surface. A screen 34; is placed on-the top of the bars 33, 33 and other blanket 35 of cocoanut matting or burlap is spread upon and covers the screen 34. Y

For the'purposgsot 20 from loading or cl ging I have provided directlybelow said screen 2O a plurality ouf automatic hammers or vibrators 36 that each have one end pivotally mounted onal shaft 37 and are adapted to rest their other ends on a cross bar 38 such adapted n l is provided with a plurality of offset `rtions or crank arms 40, as illustrate fin" Fig. 5, the outer end c'E such shaft being proreventing then vibrators 36 being to be actuated by a shaft 39whiclm'` vided with a belt pulley 41 by which it may order that gold, platinum and other' iure metals may be amalgamated and settle into be rotateda 'The shaft 39 is so disposed that, when it is rotated the odset portions t0, Ll() will engage With the lower sides of the vi brators 36 at points near the pivot shaft 37 thus causing theree ends of the vibrators to move vquickly upward to strike against the lower surface lof the screen 19 to jar loose any particles of sand, gravel or the like that may tend to lodge in the meshes of said screen.

The sluice box 2O is lined with a blanket 43 of Brussels carpet, burlap, cocoa matting or the like, and is'provided with riliies la `which extend crosswise thereof.

When operating my device, power may bev applied to the pulley 13 to rotate the shaft 9 thus to impart a transverse shaking motion to the vanner frame 6 and at the saine time ore and Water may be fed into the distributing box 16 and may passdon'nwardly onto the screen-19, the coarser ore passing over screen 19 into the sluice box 2O and the finer vore falling through such screen 19 onto the screen 2l and the amalgamated plate 22 where a portion of the gold is retained, the fine ore moving toward the discharge end of the machine and entering between the amal- -gamated plates Q3 and 2l which serve vto catch and retain more of the gold, the upper plate 24 catching the liour and iioat gold and the lou'er'plate Q3 catching the heavier particles. The liner ore then passes into the trap 25 where it is thoroughly immersed in a solution of sodium amalgamy and is thoroughly agitated by the agitator 27 in the recesses 26 that are provided in the bot-l tom of .the trap 25. rlhe agitator 27 which rotates in the direction indicated by the arrow causes the pulp in the trap to pile up and to pass over the lower edge of the trap Z5 and on to the blanket 31 of burlap, cocoa'nut mat;

lcessive rilles 32, 32 which rililes 3Q,

forming a passage, I of said plates, the upper of said plates benear the bottom Ligarse or the like, which .lies on top of the The pulp then works over the suc- 32 catch and hold any gold that may settle to the bottoni and such pulp is finally discharged from the end of the machine, the blanket 34 on the top of the screen 35 preventingany particles of fine gold from becoming dry and floating away. |The coarser ore passes into the sluice box 20 and moves downwardly toward the discharge end of the machine over the blanket and ythe riiiles 44 such riiigs 44 and blanket 43 serving to catch any gold that may be carried over with such coarser ore.

Obviously changes in various details embodied in my invention may be made Without departing from the spirit thereof or sacrificing any o' its advantages.

What lt-claim is:

l. The combination With a shaking trough, of superposod amalgamated plates therein a trap at the lower end ting plate 30.

ing deflected into -said trap and terminating thereof, and agitating means in the trap in' proximity to the outlet of the passargefo'rmed by said plates.

2. he combination with a shaking trough, ot a trap located intermediate the length of said trough, a blanket section irl/the trough immediately beyond said trap, rillles upon said blanket, a screen slightly spaced abovel the riilles, and a blanket upon said screen,` said screen and its blanket being positioned: to divide the stream of pulp issuing from' said trap.

ln witness Whereoi, l hereunto subscribe inv name this fifteent i day of November y JOSEPH B. GREEN. Witnesses:

lWimmer E. Fer, FRANK WARREN. 

